相關資料：
1.http://blog.csdn.net/jarniyy/article/details/51133214
1、查看數據庫鎖,診斷鎖的來源及類型：
select object_id,session_id,locked_mode from v$locked_object;
或者用以下命令：
select b.owner,b.object_name,l.session_id,l.locked_mode from v$locked_object l, dba_objects b where b.object_id=l.object_id
2、找出數據庫的serial#,以備殺死：
select t2.username,t2.sid,t2.serial#,t2.logon_time from v$locked_object t1,v$session t2 where t1.session_id=t2.sid order by t2.logon_time;
3、殺死該session:
alter system kill session 'sid,serial#'